diff --git a/Gemfile.lock b/Gemfile.lock
index 039bfde..faf09e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,77 +7,149 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    abstract (1.0.0)
-    actionmailer (3.0.11)
-      actionpack (= 3.0.11)
-      mail (~> 2.2.19)
-    actionpack (3.0.11)
-      activemodel (= 3.0.11)
-      activesupport (= 3.0.11)
-      builder (~> 2.1.2)
-      erubis (~> 2.6.6)
-      i18n (~> 0.5.0)
-      rack (~> 1.2.1)
-      rack-mount (~> 0.6.14)
-      rack-test (~> 0.5.7)
-      tzinfo (~> 0.3.23)
-    activemodel (3.0.11)
-      activesupport (= 3.0.11)
-      builder (~> 2.1.2)
-      i18n (~> 0.5.0)
-    activerecord (3.0.11)
-      activemodel (= 3.0.11)
-      activesupport (= 3.0.11)
-      arel (~> 2.0.10)
-      tzinfo (~> 0.3.23)
-    activeresource (3.0.11)
-      activemodel (= 3.0.11)
-      activesupport (= 3.0.11)
-    activesupport (3.0.11)
-    arel (2.0.10)
-    builder (2.1.2)
+    actioncable (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      activejob (= 7.0.4.1)
+      activerecord (= 7.0.4.1)
+      activestorage (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      mail (>= 2.7.1)
+      net-imap
+      net-pop
+      net-smtp
+    actionmailer (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      actionview (= 7.0.4.1)
+      activejob (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      mail (~> 2.5, >= 2.5.4)
+      net-imap
+      net-pop
+      net-smtp
+      rails-dom-testing (~> 2.0)
+    actionpack (7.0.4.1)
+      actionview (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      rack (~> 2.0, >= 2.2.0)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      activerecord (= 7.0.4.1)
+      activestorage (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (7.0.4.1)
+      activesupport (= 7.0.4.1)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (7.0.4.1)
+      activesupport (= 7.0.4.1)
+      globalid (>= 0.3.6)
+    activemodel (7.0.4.1)
+      activesupport (= 7.0.4.1)
+    activerecord (7.0.4.1)
+      activemodel (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+    activestorage (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      activejob (= 7.0.4.1)
+      activerecord (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      marcel (~> 1.0)
+      mini_mime (>= 1.1.0)
+    activesupport (7.0.4.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    builder (3.2.4)
+    concurrent-ruby (1.1.10)
     contest (0.1.2)
-    erubis (2.6.6)
-      abstract (>= 1.0.0)
-    i18n (0.5.0)
-    json (1.6.5)
-    mail (2.2.19)
-      activesupport (>= 2.3.6)
-      i18n (>= 0.4.0)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    mime-types (1.17.2)
+    crass (1.0.6)
+    date (3.3.3)
+    erubi (1.12.0)
+    globalid (1.0.1)
+      activesupport (>= 5.0)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.8.0.1)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.2)
+    method_source (1.0.0)
+    mini_mime (1.1.2)
+    mini_portile2 (2.8.1)
+    minitest (5.17.0)
     mocha (0.9.12)
-    polyglot (0.3.3)
-    rack (1.2.5)
-    rack-mount (0.6.14)
-      rack (>= 1.0.0)
-    rack-test (0.5.7)
-      rack (>= 1.0)
-    rails (3.0.11)
-      actionmailer (= 3.0.11)
-      actionpack (= 3.0.11)
-      activerecord (= 3.0.11)
-      activeresource (= 3.0.11)
-      activesupport (= 3.0.11)
-      bundler (~> 1.0)
-      railties (= 3.0.11)
-    railties (3.0.11)
-      actionpack (= 3.0.11)
-      activesupport (= 3.0.11)
-      rake (>= 0.8.7)
-      rdoc (~> 3.4)
-      thor (~> 0.14.4)
-    rake (0.9.2.2)
-    rdoc (3.12)
-      json (~> 1.4)
+    net-imap (0.3.4)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.1)
+      timeout
+    net-smtp (0.3.3)
+      net-protocol
+    nio4r (2.5.8)
+    nokogiri (1.14.0)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    racc (1.6.2)
+    rack (2.2.6.2)
+    rack-test (2.0.2)
+      rack (>= 1.3)
+    rails (7.0.4.1)
+      actioncable (= 7.0.4.1)
+      actionmailbox (= 7.0.4.1)
+      actionmailer (= 7.0.4.1)
+      actionpack (= 7.0.4.1)
+      actiontext (= 7.0.4.1)
+      actionview (= 7.0.4.1)
+      activejob (= 7.0.4.1)
+      activemodel (= 7.0.4.1)
+      activerecord (= 7.0.4.1)
+      activestorage (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      bundler (>= 1.15.0)
+      railties (= 7.0.4.1)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
+    railties (7.0.4.1)
+      actionpack (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+      method_source
+      rake (>= 12.2)
+      thor (~> 1.0)
+      zeitwerk (~> 2.5)
+    rake (13.0.6)
     sqlite3 (1.3.5)
     test-unit (2.2.0)
-    thor (0.14.6)
-    treetop (1.4.10)
-      polyglot
-      polyglot (>= 0.3.1)
-    tzinfo (0.3.31)
+    thor (1.2.1)
+    timeout (0.3.1)
+    tzinfo (2.0.5)
+      concurrent-ruby (~> 1.0)
+    websocket-driver (0.7.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby
@@ -85,7 +157,6 @@ PLATFORMS
 DEPENDENCIES
   contest
   mocha
-  rails (= 3.0.11)
   sqlite3
   test-unit
   themes_for_rails!